African Walnut
IOverview
Overview
African Walnut, scientifically known as Coula edulis and belonging to the Fabaceae family, is a large tree native to the tropical regions of West and Central Africa, including Benin, Cabinda, Cameroon, Congo, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, and Zaïre. This tree thrives in habitats that offer light to partial shade with moist soil, which can be either sandy, medium, or clay-like. It is hardy in zones 10-12 and can grow up to 20 meters tall. The African Walnut is highly valued for its edible seed, making it an important food source in local communities. The tree's adaptability to various soil types while still requiring moisture makes it a versatile addition to diverse ecosystems. Additionally, the African Walnut has practical utility as a fire starter and lumber source, with its seeds also being used to produce oil. In cultivation, African Walnut thrives best in full to partial sun and requires moist, well-draining soil that can be light (sandy), medium, or heavy (clay). For propagation, seeds are the preferred method. Ensuring adequate moisture is crucial for optimal growth.
What is African Walnut?
African Walnut, scientifically known as Coula edulis and belonging to the Fabaceae family, is a large tree native to the tropical regions of West and Central Africa, including Benin, Cabinda, Cameroon, Congo, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, and Zaïre.
VCultivation
Cultivation
How to grow African Walnut for the first time
Start with planting an African Walnut seedling in a sunny spot, and you'll have a low-maintenance tree that can grow to be quite large.
- 1
What you'll need
African Walnut (Coula edulis) seedling or seeds, potting mix, container for transplanting if needed.
- 2
Best time to plant
Plant in spring when the last frost has passed and temperatures are consistently above 10°C.
- 3
Soil and container prep
Use well-draining soil with a pH between 6.0 and 7.5. Ensure containers have drainage holes if you're planting in one.
- 4
Sowing or transplanting
Transplant seedlings into the garden after hardening off for a week, or sow seeds directly where they will grow.
- 5
First two weeks
Water regularly to keep soil moist but not waterlogged. Monitor for pests and diseases.
- 6
Ongoing care
Provide full sun to partial shade. Water when the top inch of soil is dry, especially in hot weather. Fertilize sparingly with a balanced fertilizer.
- 7
Harvest or pruning
Prune young trees to shape them and remove dead branches. Harvest seeds for planting once they are ripe and fall from the tree.
- 8
Common mistakes
Planting in heavy clay soil, overwatering, not providing enough sunlight, neglecting to prune, and using too much fertilizer.
VIEdible & utility
Edible & utility
VIIDistribution
12 native · 0 introduced
Distribution
12 native · 0 introducedIXSpecimen gallery
1 image
Specimen gallery
1 imageXSee also
8 related
See also
8 relatedPlants you might compare or use together — scored by shared family (Fabaceae), common use cases, and growing requirements.
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